Suddenly we have some reports which show this error message.
Looking at the dev console we see the following JS error:
TypeError: Cannot read properties of undefined (reading 'source')
at SVGGElement.<anonymous> (timelines.js:155:26)
at SVGGElement.<anonymous> (d3.js:792:21)
at d3.js:962:16
at Ae (d3.js:968:30)
at K.each (d3.js:961:12)
at K.html (d3.js:791:36)
at timelines.js:153:6
at NL (timelines.js:240:3)
at LineAreaBarPostRender.js:402:3
at VV (LineAreaBarPostRender.js:453:3)
Debugging we have seen it's failing because following line: return Icons[icon].source;
contains "balloon" as icon, and apparently this icon don't exist anymore. We are running version v1.47.6. It seems something ahs changed recently, maybe this.
How can we fix it?